But I always wondered, from Core design or fans, when Lara got her hair down, why are they always so short ? She could never have such a long braid with such short hair. Actually her hair should be longer without the braid.
Not saying that against the outfit because she looks great even with the shorter hair but I always thought it was weird.

I agree. You need a very long hair to have such long braid. Almost Rapunzel.